Freelance Database Developer & Programmer for Hire
Many startups and enterprises have already hired Database developers through Expert Remote. We’ve sourced and vetted hundreds of Database engineers of middle, senior and tech lead level. Save 35 hours per hire on average. It’s fast, it’s easy and it’s cost-effective.
Hire Top 1% of Database Developers Today
How Hiring Process Works
What Expert Remote Does for You
What Our Clients Say
We used Expert Remote for hiring specialists in UI/UX design, web development, project management and QA. After speaking to a number of companies across the globe we chose them due to great communication and delivery of our projects on time and on budget.
What is it about the company that you appreciate the most?
Communications, Pricing and skillset.
We built a team at Expert Remote that developed our product for 2 years. Developers were professionals, initiative and took part in all aspects of the software development life cycle.
What is it about the company that you appreciate the most?
They are very flexible. We were able to manage the team directly and grow as we needed.
We have been working with Expert Remote for more than a year now. They provided our initial remote team and developed our MVP. All software engineers are hard working, reliable and communicate well which is hard to come by in that setting.
What is it about the company that you appreciate the most?
Reliable and great at communicating even when you are on the other side of the world.
Expert Remote developers helped in developing apps, but also in talking through scope and need and giving ideas – which is very useful for a non-coder like myself.
What is it about the company that you appreciate the most?
Communication skills.
Frequently
Asked Questions
How does Expert Remote test database programmers?
We rely on a variety of methods to test our freelance programmers. These include a simple coding test, an in-depth background check, and an interview with an experienced member of our team. Only after these steps are passed do we consider anyone for hire as part of our team.
What do you need to know about my project to find a fitting database developer?
We ask our clients to provide us with as much information about their projects as possible.
How does an 8-hour trial work?
We offer a free 8-hour trial for all of our database developers. It allows you to get a feel for their work and decide whether you’d like to hire the best database experts full-time.
I don’t quite know what database is better for my product. What should I do?
Our team of experts will help you find the best database for your project.
Can database developers do machine learning?
Yes, some of our database developers are well-versed in machine learning.
13 min read
Freelance Database Developer & Programmer for Hire
A database developer is a broad term that encompasses many different types of professionals. A database specialist is a professional who designs, organizes, sets up, and connects databases to the products they support. The most common database technologies used today are relational database management systems (RDBMS) like Oracle Database and MySQL.
You can hire database developers on a freelance basis for short or long-term projects. Let’s look at the different types of developers, their skills, and ways to hire database developers so that they bring real impact to your project.
Main Skills a Database Programmer Should Have
Freelance database developers and programmers are in high demand. If you’re looking to hire a freelance database developer, you should know what skills they need to possess to be considered professionals.
Relational (SQL) and Non-relational (NoSQL) Databases
These are two types of databases that store information based on different principles but ultimately serve similar purposes. Relational databases store data in tables (rows and columns), whereas non-relational databases do not have any concept of tables or rows. Instead, they collect and organize various types of data in a data structure.
SQL databases work great with static data that does not need to be altered after it is recorded. NoSQL types are better for more dynamic data flow.
The most common RDBMS is MySQL, which powers most enterprise systems including Uber, Airbnb, and Shopify. The most common non-relational database management system (NRDBMS) is MongoDB, which is used by Toyota, Forbes, and Flobiz.
Database Testing
A database developer is often responsible for the quality of the data that is being stored in the database. It means that they need to ensure that their code is working properly and that there aren’t any bugs.
Database programmers should know how to perform ACID properties validation, test data mapping, verify data integrity, and check business rule conformity.
CRUD Operation Knowledge
CRUD stands for Create, Read, Update, and Delete. Essentially, these are the basic visual operations you need to know if you want to work with databases in any capacity. When working with REST APIs, it’s important to understand the CRUD concept because it will help the developer comprehend how the application interacts with other systems.
Data Modeling
A database developer must be able to model data in a way that is logical and practical. It means that they need to understand what the data will be used for and how it will be used. They must also keep in mind how data can be stored and retrieved from the database, as well as how quickly it can be accessed.
Software Architecture
Software architecture defines how the software will be structured, what it will accomplish, and how it will be implemented. Database modules are parts of software architecture and are reflected in a database. Each module represents a separate collection of files or data structures that perform specific functions within the overall system. Database modules can be either physical or logical.
This is critical for database experts because it defines the way that data is stored in the database and what types of queries can be run on that data.
Backend Development Skills
A database developer needs to be able to manipulate the data. This means telling a database what to do with the data so that it can serve as a source of useful information. And though it’s not necessary to know C#, Java, or Python for database application development, even some basics can help enormously. It is especially relevant if the project is centered around handling a large amount of data.
What Freelance Database Developers to Hire for Your Project
Database development jobs are available across various domains such as healthcare and insurance, finance, e-commerce, and the education sector. Database experts can be categorized according to their specialization.
MySQL Developers
Hire database developer who has professional experience working with MySQL databases. They’ll be able to work with any type of SQL-based database system and help design an efficient schema that meets your technical needs.
When to hire MySQL database developers
MySQL is great for building small web solutions, like ecommerce stores for the local market. It is also a great choice for online analytical processing and online transaction solutions. In general, when a comparably small amount of data is used, MySQL will be a great fit.
Oracle Developers
Oracle is another popular database system, and it’s used by many large companies around the world for their mission-critical databases. Oracle developers can help your team design, develop and maintain an enterprise-grade database solution with a high level of availability.
When to hire Oracle developers:
If you have a large database to manage, then Oracle developers are your best choice. Oracle is a reasonable solution for data warehousing and online transaction solutions.
MongoDB Developers
For smaller projects that require less expertise in MySQL or Oracle servers, but still need some complexity in their schemas, consider hiring MongoDB developers. They specialize in NoSQL systems, and their knowledge is more limited than those who’ve worked with more common systems. However, they can provide enough versatility when working with the MongoDB framework.
When to hire MongoDB developers:
Due to its NoSQL nature, MongoDB is best for real-time scalability and data integration. It will be a good fit for product catalogs with multiple attributes, or analytics platforms that continuously track information.
Cassandra Developers
Cassandra database developers are great for business applications that need data to be available and consistent at all times. It’s also very good for workloads that are write-intensive and can handle numerous requests at once. However, if you need transactions in your app (e.g. creating users), Cassandra won’t work well because it doesn’t have ACID compliance like other databases do. The ongoing maintenance cost for a Cassandra database is also very low.
When to hire Cassandra developers:
Cassandra is a popular choice for user activity tracking, where it’s important to keep all data up-to-date as quickly as possible. It will be a good fit for data centers, weather apps, ecommerce stores — where there is a constant flow of information.
Firebase Developers
When you have a new project, and you are not sure which technology to use — hiring a Firebase developer will save you time and money. Firebase is beginner-friendly and easy to use while providing convenient access to data.
When to hire Firebase developers:
Firebase database developers are a common choice for real-time apps that need to be able to handle large amounts of data. Firebase is also easy to set up and can be used in conjunction with other databases like Cassandra. Cloud Firestore can process 1 million concurrent connections making it a good solution for apps with limited sorting and filtering queries.
Top Freelance Database Developer: Skillset by Level
Hiring a freelance database developer can be a daunting task, especially if you’re new to the field. If you’re hoping to hire database developers, here are some of the skillsets database experts should have at different levels.
Junior Database Programmer
Junior database developers are entry-level developers who have just started working with databases. The main skill they should possess is the ability to learn quickly, and if they are passionate enough, then you can expect them to grow fast. They also need to have logical thinking skills and technical skills. These two traits will come in handy while solving complex problems or identifying flaws in existing systems.
Examples of Interview Questions
- What is a relational database?
A: It is a database management system that uses specific schemes like tables to store data.
- What is the difference between SQL and NoSQL?
A: SQL is a relational database system that uses a schema for storing data, while NoSQL is an alternative database model that uses more flexible data structures.
- Can you explain the data model of MongoDB?
A: The data engineering model of MongoDB is an open-source document-oriented database.
Mid-level Database Developer
Mid-level database developers should have a solid understanding of data engineering, database administration, and the ability to create and maintain databases. Mid-level database developers need to be able to demonstrate their knowledge of how each step in the process contributes to creating an accurate model.
Examples of Interview Questions
- What is ACID compliance?
A: ACID compliance is a database property that ensures that a database transaction can’t be lost or corrupted.
- What are some of the challenges of working with big data?
A: Constraints, data volume, and the need for real-time analysis are just a few of the challenges.
- What are some of the benefits of working with big data?
A: It can help you get a better understanding of your customers and provide them with more personalized services.
Senior Database Programmer
A senior database programmer should be able to work on the database from end to end and know how to build, maintain, and support it. The role also requires an understanding of different types of databases, including relational database systems and NoSQL databases. In addition, top developers should be able to write SQL queries that are optimized for performance.
Examples of Interview Questions
- What was your favorite database you’ve worked with, and why?
A: (Possible answer) My favorite database to work with is MySQL. It’s a fast, easy-to-use, and flexible database that I have used for many of my applications.
- What are some of the challenges of using relational databases in an enterprise environment?
A: Relational databases are often difficult to scale.
- What’s a common mistake that developers make when working with databases?
A: The biggest mistake developers make when working with databases is not understanding how to structure the data.
What Other Roles Freelance Database Developers Can Hold
In addition to the roles listed above, there are many other titles that a database programmer can hold.
| Role | Responsibilities | SDK |
| Database Administrator | A database administrator is responsible for maintaining the integrity of your company’s data, making sure it’s backed up properly and ready to be accessed at any time. Database administration includes ensuring that the databases are secure from hackers and performing regular maintenance. | Firebase, Oracle, SQL Server |
| Data Architect | A data architect is responsible for the development and maintenance of an organization’s information management systems. They oversee all aspects of data modeling, web design, and implementation, and ensure that your company’s information system meets your needs. | IBM InfoSphere, MySQL, Oracle |
| Data Engineer | A data engineer is responsible for managing both structured and unstructured data within your organization. It includes everything from maintaining databases to analyzing user behavior on social media platforms like Facebook or Twitter. The purpose is to gain insights into what kind of content you should post next time you’re looking to increase engagement with potential customers in a particular market segment. | MongoDB, MySQL |
| Data Analyst | A data analyst is responsible for analyzing large amounts of data to gain insights into how your company can best improve its operations. This may include using statistical software like SPSS, which can help you understand customer behavior and identify trends in the marketplace that might lead to new opportunities. | Cassandra, MySQL, SPSS |
If you’re looking to hire a freelance database programmer, we hope you found this information helpful. To hire database developers that fit your project, feel free to reach out to us!
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